1
An atom, whose atomic number is 18, is classified in the Periodic Table as:
alkali metal.
or earthy metal
2
Which family does oxygen belong to? periodic table
house 13
house 16
3
What is element 12 on the periodic table?
Magnesium
hélio
4
What is the characteristic of element 10? periodic table
It presents several possible oxidation states, generating solutions with different and striking colors. Vanadium metal has good corrosion resistance and a grayish color.
It is a silvery-white metal, slightly hard, malleable, with good corrosion resistance.
5
which chemical elements belong to house 17
they are: which chemical elements belong to house 17
They are: scandium, yttrium, lanthanide series and actinide series
6
Who has the highest atomic number?
The carbon family
Oganessonium is element 118 on the Periodic Table.
7
What is the element with the lowest atomic number?
if it is hydrogen
if it is nitrogen
8
What are the most used elements in the periodic table?
carbon, oxygen, hydrogen and nitrogen.
Sulfur
Erbium
Scandium
Tin
9
The elements that belong to the same family are?
Magnesium (Mg) and Calcium).
fluorine, chlorine,
10
What is the heaviest element?
osmium
oganessonium
11
Radon 1898 Fredrich Ernst Dorn who called it nitronium Lutetium 1907 Georges Urbain Protactinium 1917 Kasimir Fajans, O. Göhring, Fredrich Soddy, John Cranston, Lise Meitner and Otto Hahn
True
False
12
The Periodic Table is a tool that aims to organize and group all the chemical elements ever discovered by human beings.
False
True
